// Copyright 2003-2023 by Autodesk, Inc. 
//
// Permission to use, copy, modify, and distribute this software in
// object code form for any purpose and without fee is hereby granted, 
// provided that the above copyright notice appears in all copies and 
// that both that copyright notice and the limited warranty and
// restricted rights notice below appear in all supporting 
// documentation.
//
// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS. 
// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE.  AUTODESK, INC. 
// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
// UNINTERRUPTED OR ERROR FREE.
//
// Use, duplication, or disclosure by the U.S. Government is subject to 
// restrictions set forth in FAR 52.227-19 (Commercial Computer
// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
// (Rights in Technical Data and Computer Software), as applicable.

using System.IO;
using System.Security.AccessControl;
using System.Security.Principal;

namespace Glodon.Lookup.Utils
{
    public static class AccessUtils
    {
        public static bool CheckWriteAccess(string path)
        {
            var identity = WindowsIdentity.GetCurrent();
            var principal = new WindowsPrincipal(identity);
            var accessControl = new DirectoryInfo(path).GetAccessControl();
            var accessRules = accessControl.GetAccessRules(true, true, typeof(NTAccount));
            var writeAccess = false;
            foreach (FileSystemAccessRule rule in accessRules)
                if (principal.IsInRole(rule.IdentityReference.Value) && (rule.FileSystemRights & FileSystemRights.WriteData) == FileSystemRights.WriteData)
                {
                    writeAccess = true;
                    break;
                }

            return writeAccess;
        }
    }
}
